Paper-feeding mechanism



"Jan 30,1923

vA. OLGAY, PAPER FEEDING MECHANISML `4 SHEETS-SHEET l.

HLED MAY 5,1920.

J an. 30, 1923. Y

A. OLGAY. PAPERFEEDING MECHANISM.

' FILED MAY 5. 1920. 4 SHEETS-SHEET 2.

m14 @544| R' W W 'IN 4 Q 4 M4 ww' Iiimixmhisim Jan, 30, 1923.

Y l #Mezz @gygy paper fr'om-a pile. Devices for this purpose f PatentedJan. 30, 1923.l

UNITED STATES E l C E PATENT'O ALBERT OLGAY, OF CHICAGO, ILLINOIS,ASSIGNOR-TO GAW-OHARA ENVELOPE COMPANY, OF CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

-IAPER-FEEDING MECHANISM.

Application led May 5, 1920. Serial No. 378,975.

Toall whom it may concer/rt:

y Beit known that I, ALBERT OLGAY, ,a German citizen, who have declaredmy intention of becoming a citizen of the United States, residing atChicago, in the county ofCook and State of Illinois, have inventedcertain new and usefulv Improvements in Paper-Feeding Mechanism, ofwhich the following is a specification.

My invention relates to paper handling devices for' feeding individualsheets' of have a Widerange of usefulness in connecchines.

tion with many different kinds 'of printing, v'perforating folding andAWrapping ma- One 'obje-ct of my linvei'ition is to s iml-plifythemechanism necessary for' feeding the sheets.

,Another vobject is to provide. a mechanlsm capable ofibeing operated ata much greater speed than ithose at present in use without inventionwill become apparent as the dej, sacrificing ,either reliability orcertainty of loperation. y

F urther objects land advantages of my inscriptie-n proceeds.`

In the accompanyingdrawings Figure 1 isl a side vieyvof a portionofpaper4 hand Aling machine showing myimproved def vice in sideelevation. 4Fig. 2 is an end elel ration of the' feedumechanism. Fig. 3is a section on the line 3-3 of Fig. Figs. 4 ,and' arer detail sectionsof the, eccentric mountings for the shaft carrying the feed shoes.Fig-s. 6 and 7` are fragmentary sec- Fig. 10is a Idetail lsec-tion ofthe shoe and lected for illustration a. frame 10 adapted tions similarto Fig.A 3 illustrating two other stages in the operation -of thedevice. j. Fig. 34 is a detail view illustrating the mounting oftheribber end block. 9 is a detail of the feed shoe showing in section theadjustable mounting of the Hcontact` piece.

`Contact piece.y l

In the embodiment of my invention seto support any: kind of paperhandling or printingzjlevice is equipped with plates 12' supporting myimproved feedingr mecha- Lnism and the receiving means of the paperhandlingl device to which the pieces of paper are to bedelive-red. Thereceiving means comprises in this insta'nce a set of .feed rollersA 14mounted on a shaft lland, en-

gaging the surfaceof a vmoving belt 'I8v vwhich passes over a roller 20.The roller 2() may be adjusted vertically by -set screws 22 and clampedin adjusted position by set screws 24 to `vary the lgripping action ofthe belt and rollers on the paper handled. In-

asmuch as this adjustment is very slight I prefer to drive the shaft 16from the shaft carrying roller 2 0, by a simple pair of gears 26'and 28.It is Wellknown that gears' havlng involute teeth m'ay be slightlyseparated from each lother Without V- destroying "thej properintermeshing engagement of' the An `inclined lchute preferablycomprising a bottom 30- and adjustable side. pieces 32 may be pivoted at34 and supported at any desired .angle-by an' adjustable and extensiblebrace l36. The support for the pile of paper comprises the bottom of.this chute afnd frictio-n terminallblocks 38 preferably-`of .rubber ofthe grade known as mechanical 'rubben The latter are preferably'mounted4to prolong the end-of the chute bottom at an angle slightly nearer'thehorizontal. A

Aby Vthe threaded shank 48 on the'end of the bar 50 pivotallysupportingtheroller 42. Suitable nuts 52 engage both sides of the -sha ft,44 forlongitudinal adjustment of the bar 50. It Will be seen that the exactposition of the roller 42 may be adjusted with precisionv toV any 4pointin its plane and within the range of the adjustment pro` vided.

The blocks 38 are carried in supports 53l individually rotatable on aslee-ve 541splined on the shaft 56 rigidly `fastened in verticallyadjustable blocks 55 at the ends of the mechanism. Set screyvs 59 may beused to clampthe 'blocks in adjusted position-lon' gitudinally 'ofshaft56. The shaft 56 may also be suitably'adjusted and clamped in positionbyset screws 57. For rotary adjustment around the sleeve 54eacli support53 carries a screw 62 meshing with worm teeth 65 formed in the sleeve.'A suitable lock nut 67 may bei-employed to fasten the screw andthereby-"the block 38I in adjusted position. The stop wheel 42 andcenter block 38ar'e tobe adjusted so thatfa single sheet f material canslide over. the blockin contact with the stop roller' with a gentlesheets to slide down against the roller.

I have provided means for intermittently l engagingA the topmost i sheetof paper at either side of the rollerl 42 and moving it forward to beengaged4 by the belt 18 and rollers 14.. As illustrated, this meanscomprises oscillating feed shoes 58 located on either side of the roller42 and cooperating ,Withgthe twooutside blocks 38. These feed shoesreceive an oscillatory movement of rotation about the axis of the shaft6() supporting them, and theshaft itself is also oscillated around acircle of very small diameter, the two movements vbeing superposed insuch a way that the feed shoes will be lifted clear of the paper while.moving back to the' position shownn Fig. 3, and then by the oscillationof the shaft 60 forced into contact with-the paper as shown in Fig.

6, and rocked as shown in Fig. 7 while still in contact with the paperto carry the' topmost sheet into place between the belt 18 and rollers14, and again lifted on the return stroke.

The connections I have illustrated for thus moving the feed shoesinclude a crank 63 carried by a rotating shaft 64 which for the presentpurposemay be considered a sourcey of power, a connecting link 66 and alonger crank 68 fastened to the-shaft 60 to rotate the same. The uppercrank 68 being longer than the lower crank 6.2, it will be obvious thatthe lower crank may rotate continuously throughout a circle in onedirection and operate the link 66 to rock the upper crank back and forth4through a portion of a revolution only, thus imparting 'the desiredrotation `to the feed shoes.

Asclearly illustrated in Figs. 4 and 5 leach end of the shaft isrotatably supported in a bushing 70, the outercylindrical surface ofwhich is v,rotatably supported by a bearing 72 formed in thefsupportingframework and is 'eccentricto the inner surface engagingA the shaft 60.The eccentrics at, both ends ofthe machine are rotated at tion.`Obviously the width'of the arcuate interposed between, the parts. tionwith' Ythe Vrubber surfaces :therefore connections such asl sprocket'wheels 74 on' the two shafts and a connecting chain 76. To 'produce therequlred motion it w1ll be obvious that the positions of the crank 63and eccentrics 70. must be properly synchronized.` Vithwthe linkage aslaid outin the tric mounting is approximately directly upward asindicated in Fig. 3 whilethe shoe 'is rocked back by the crank 63 whichextends approximately horizontally to the left- `drawings thedisplacement due to the ecceny and is therefore about one quarter of arevolution ahead of the eccentric'70. lVhen The feed shoes 58`shouldvpreferably have y the portions engaging'the paper faced with v rubber.In Fig. 91 have illustrated -a rub ber facing 78 fastened tothe shoeatits ends by retaining plates 80, and an arcuate back.- ing plate S2engaged by a plurality of set screws 84 passing through the outerarcuate portion'l of the shoe. This provides an additional means forprecise adjustmentof the clearance and the resulting friction betweenthe pieces of paper, the rubber blocks 38 and the rubber facing 7 8.-*The shoes 58 are formed with arcuate slots 86 which not only provideconvenient. access to the set screws 84 but enable the roller shaft V16tobe mounted in the .position shown, passing throughV thc slices withoutinterfering with their ac# slots 86 must be the diameter-ofthe shaft 16plus twice the arm of eccentric.70 plus-- -a reasonable allowancefor'clearance.

" Fig. 3 the sheet of paper next the top overlies the sloping port-ion88 of thej block 438 so that, its leading edge comes within the arc ofcontact between' the .face 78 of feed shoe v 58 and the block 38. Theportion of thetop. vsheet therefore overlying the front' edgeof'the nextsheet belowit represents a point.where'two*thicknesses of paper are VThefric'- taken by the feed shoe on its next stroke.-

Devices according. to my invention are capable of feeding .individualpieces of paper at much higher speeds.- than heretofore possible. Thelmechanism` employed comprises relatively few parts of relatively simpleshapes and is reliable and durable in service. r

v lVhile I have illustrated and described in detail the preferredembodiment of my invention, it should be clearly understood that thedisclosure is merely for purposeslof illustration and that manymodifications and variations will naturally' occur to those skilled inthe art. I aim in the subjoined claims to cover all such legitimatevariations and modifications.

I claim as my invention:

. l. A sheet feeding device having, in combination, means for supportinga pile of sheets, adjustable friction shoes, means for moving said shoesto intermittently engage the upper surface of the ltopmost sheet andmove it off the pile, and means operating on the sheets by engagement onopposite sides of their leading edges for preventing,

the removal of more Vthan one sheet at a time by said shoes, said -lastmentioned means being operable separately fromA and not relying upon.the adjustment of said shoes.

2. A sheet feeding device having, in combination, means for supporting apile of sheets, friction shoes adjustable relative to the pile of sheetson said support, means for moving said shoes to intermittently engagelthe upper surface of the topmost sheet adjacent its edge and move it offthe pile, and means operating above and below the leading edges of thetopmost sheets to prevent displacement of more than one sheet from itsposition on the pile, said means being op erable separately from and notrelying upon the precise adjustment of the shoes.

3. A sheet feeding device having, in combination, means for supporting apile of sheets, friction means offering relatively slight resistance toa sliding movement of a single sheet off the top of said pile but agreat resistance to' a sliding movement. of

" more than one sheet, and friction shoes movi izng intermittently fintoengagement with the topmostsheet adjacent its edge to move said topmostsheet off the pile, said shoes being adjustable as to the degree ofpressure which they exert vin engaging v said sheets. and said frictionmeans being operable separately and not relying for its proper operationupon the operating adjustment of said shoes to attend to the feeding ofthe sheets separately. A

4. A sheet feeding device having, in combination, a shaft, a frictionshoe carried said shaft, means for oscillating said shoe by oscillationand rotation of said shaft'.

and means for shifting said shoe into and out of contact with a sheet bydisplacement 0f said shaft,toivard andV away from said sheet.

5. In a sheet feeding device, in combination, a shaft, means for movingsaid shaft bodily in a clrcular orbit of small diameter.

and means for imparting oscillation and rotation to said shaft, saidmeans being synchronized to produce a regular cycle of operation.

' 6. A sheet feeding device having, in combination, a contact shoe,means for rockingsaid contact shoe back and forth, means for loweringsaid. contact shoe on the forward stroke into contact with a sheet,means for raising .said shoe on the rearward stroke',

and means for positioning a fanned out pile of ysheets where the shoewill engage the leading edges of the sameon the forward stroke.

v T. A sheet feeding device having, in com'- bination, means forsupporting a pile of sheets in staggered relation, means adjacent theleading edge of thetopmost sheetadap-ted to permit onlyv one sheet toslide'off said pile, yand means for intermittentlyv engaging t'he uppersurface of the topmost sheet for sliding said sheet off the pile,` saidsecond means being operable separately and not relying upon the mannerof operation or adjustment of said third means. l

S. A sheet feeding device having` in combination, an inclined supportfor carrying a fanned out pile of sheets`r rubber friction elementsunderlying the edges of the uppermost sheets, a movable elementcooperating Withone of said friction elements and spaced to allow only asingle sheet to slide across its cooperatingfriction element, andfriction shoes adapted to move intermittenti)v over ,cert-ain other ofsaid underlying friction ele- .tion with the .sheets than the frictionbetween the sheets and gauging meansy cooperating With said shoes and.inrleijmig elements to prevent the passage of more than 4one sheet.

past the same, and means for intermittently moving said shoes over saidunderlying elements to feed the single sheet past said means 10. A sheetfeeding device having, in combination, an inclined support carrying avfannedout pile of sheets, stationary elements underlying 4the edges of.the uppermost sheets, movable elements, means for moving said movableelements past-said stationary elements with a clearance suflicient to accommodate one sheet only, and separate means to prevent the passage intosaid clearance of more than one sheet.

11. A sheet feeding device having, in combination, an inclined supportcarrying a fanned out pile of sheets, stationary elements underlying`the edges of the uppermost sheets, gauging' means to cooperate withsaid stationary elements, movable elements,

' and means for moving said movable elements said movable elements pastsaid stationary' elements with a clearance sufficientto'accommodat-e'one sheet only, means for positioning said sheets withthe edge of'more than one sheet within the active area between saidstationary and moving elements, and

means cooperating with said movable ele-` vments to permit the entrytherebeneath of only asingle sheet.`

13. A sheet feeding device having, in combination, an vinclined supportcarrying a fanned out pile of sheets, stationary, elements underlyingthe' edges-of., the uppermost sheets, movable elements', means formoving said movable elements 'past said stationary elements' with aclearance suf- Iicient to accommodate one sheet only, means forpositioning said sheets with the edge of more than lone sheet within theactive areabetween said stationary Vand moving elements, andgaugingmeans operating in said area, said stationary` and movingelements having a greater coefficient of friction with ,l the sheetsthan the coeiiicient of friction be- ,j

tweentwo sheets.v l M 'A sheet feeding y device having, ,1n combination,an inclined support carrying a .fanned 4out pile of sheets, a novablegauging element and .amovable Ifriction feeding element operatlng on theedges'of sai'd sheets at tli'e top 'ofithe pile andengaging the topmostlsheet `where it overlis'- the edge of the sheet below it with arelatively heavy friction, the clearance between sald support and saidgauging element being such that only a single sheet may lie between`them with a 'relatively light fricF .tional ngagement 15. A sheet'.feeding device having, `in combination, an inclined support carrying afanned out pile of sheets, a movable frictionI gauging element and 'amovable friction feeding element operating on the edges of sai'd sheetsat -the top of the pile 'and engaging the topmost sheet where itoverlies -the edge of the sheet belowit with a relatively heavyfriction, th'ecleara'nce ,between said support and said frictionelements being such that a 4single sheet may lie between them with arelatively light frictional engagement, said friction elements having I'a greater coeflicientof -friction with the sheets than the coeffcientoffriction between sheets. 1

16. A sheet feeding device having, in

combination, an inclinedsupport carrying,

a fanned out pile of sheets, friction feeding means including a movablefriction gauging element and a movable friction feeding elementoperating on the ledges of said sheets at the top'of the pile andengaging the topmost sheet'where it overlies the edge of the sheet belowit with a relatively heavy friction, the clearance between said frictionelements being vsuch `that a single lsheet may lie between them with arelatively light frictional engagement. -said sheets tending to slide bygravity due tothe inclination of the support, said gauging means beingadapted to fcheck the sliding action with a plurality ofsheetsinposition to be engaged by said friction feeding element.

17. Aj sheet feeding T device having, in

combination, an inclined support carrying a fanned out .pile of sheets,said sheets tending to slide by reason of the inclination of saidsupport, means for checkingthe sliding .action of the uppermost sheetsat a delinite point, and #means for intermittently sliding the topmo'stsheet off the pile.

18. A paper feeding device having, in combination, meansintermittentlyengaging the topmost sheet of a pile of sheets to move it off thepile,'and a thickness gauge comprising frictional elements engagingtheleadingedges of a plurality of sheets next the top of the pile andadjustable to positively prevent the feeding ofv` more than oneshee-t'at atime.

19. A paper tentlyengaging the leading edgeof'the topfeeding device'"havin in* combination, a support` for? a 'fanne .outpile of sheetscomprising an-inclin'edsupporting element and friction means` -forniingthe portion lof, the .supporting element l ,engaging Qthe' leading edgesof the"topmostl v4sheets ofthe pile, movable means intermit# l' mossheet to remove it-oti` the sheets, and a thickness gauge operating toprevent withdrawal of more than one sheet at a time and also as a stopfor the downward movement of the entire pile of sheets.

20,-Ay paper feeding device having, in combination, means intermittentlyengaging the tcpmost sheet of a pile of sheets to move it oit' the pile.and a thickness gauge comprising frictional elements engaging theleading edges of a plurality of sheets next the top ofthe pile.

21. A paper feeding device having, in combination, va support for afanned out pile of sheets comprising an inclined supporting elementandfriction means forming the portion of the supporting element engagingthe underside of the leading edges of the topmost sheets of the pile,movable means intermittently engaging the leading,

edge of the topmost sheet to move it ofi' the sheets, anda membermovable in the feedingstroke with said movable means as a sheet is fedtherebeneath adapted to prevent more than one sheet from being fed.

22. A paper feeding device having, in combination, an inclined support,the front portion of said support having a relatively high coeflicientof friction, a rotatable friction gauging element positioned adjacentthe front portion of thc support and spaced therefrom to permitwithdrawal of a single sheet with very slight friction but to imposegreat frictional resistanceto 'movemen of more than one sheet at a.time, movable frictional means operating through a predetermined path toengage the leading edges of the topmost sheet of paper, and means foradjusting the leading portion of the support toward and away from the`path of said movable friction means.

23. A paper feeding device having, in

combination, an inclined support, the frontv portion' of s aid supporthaving a relatively high coefiiclent of friction, a stationary frictionroller positioned adjacent the front portion ofthe support and spacedthere- .froln to permit withdrawal of a single sheet with very slightfriction but to impose great frictional resistance to movement of morethan one sheet at a time` movable frictional means operating through apredetermined path to intermittentl)v engage thc leading edges of thetopmostsheet of paper, and means for adjusting the leading portion ofthe support outward from the path of said vmovable friction means.

stroke.

Q6. lIn a device of the character described, 'the combination of anoperating shaft, an operated shaft, eccentric bearings for said operatedshaft, a driving connection between said bearings and said operatingshaft whereby said bearings rotate continuously, a crank on saidoperating shaft, a rocker member on said operated shaft, and meansconnecting said member and said crank whereby said member is oseillated.

A27. In a device of the character described, the combination of anoperated shaft having its ends on veccentric members whereby the axis ofthe same is shiftable, rocker members on said shaft, a continuouslyrotated operating shaft and a driving connection between said shaftswhereby to lcommunicate rotary movement to said eccentric members androcking movement to said rocker members.

In testimony whereof, yI have hereunto set my hand.

ALBERT OLGAY.

